The Texas citrus industry in the Rio Grande Valley experiences periodic droughts. During such times, water restrictions from the Amistad and Falcon Reservoirs can reduce water available for agriculture. Irrigation in this region is primarily surface waters from the Rio Grande where citrus orchards are flood irrigated. Irrigation practices that use less water are being explored and evaluated. ...

Different species of Phytophthora cause serious and economically important soilborne diseases of citrus throughout the World. Tree and crop production losses occur from damping-off of seedlings in the seedbed, root and crown rot in nurseries, foot rot and fibrous root rot, and brown rot of fruit in groves. Foot rot results from infection of the bark near the ground level producing lesions on th...

Among the existing techniques used to enhance final fruit size in citrus, the use of synthetic auxins gives good results. The effect and mode of action of these substances has been studied over the last eight years and reproducible results are obtained. These substances act through an indirect effect, reducing fruitlet growth rate and promoting abscission, thus reducing competition; and through...

Background and Aims: Citrus exocortis disease is naturally limited to citrus plants and causes a serious disease on sensitive rootstocks such as trifoliate orange. The aim of this study was to sample new variants of citrus exocortis viroid from Fars trees with yellowing and suberization symptoms and comparison with other isolates of this viroid. Materials and Methods: A number of symptomat...

As in several fruit crops, citrus trees with decreased size allow for a higher planting density, which may lead to productivity and facilitate operations such as harvesting spraying. The use of dwarfing rootstocks is one the most feasible methods tree control, but few commercial varieties are available date. In this work, long-term performance Valencia sweet orange grafted onto 51 hybrid was ev...

In micropropagation and in vitro conservation various nutrient media have been used for regeneration of citrus rootstocks. this respect, the present study was conducted to define, among three culture media, one common use (MS) two developed arboreal species (RMAN WPM), best formulation establishment, propagation vitro. Plantlets from 10 rootstocks grown were micropropagated conserved 18 months,...